Gussy,
44/77 brass is pretty much unavailable unless one is willing to pony up $3.23 per case from Track of the Wolf. Mine is my go to rifle, and I'm trying to carefully preserve my brass. The case that "let go" was a donor, and by the looks of the raggedy separation, likely suffered failure from BP corrosion. All remaining ctg cases look fine inside and out.
OLR

OLReliable wrote:At the Quigley shoot this year, one of my cartridges suffered a case neck separation. Regardless of everyone else's experience with tight patches, snug jags, dental picks, etc., it wouldn't release. I was finally able to extract the orphaned neck by plugging the bore ahead of the chamber, heating up and pouring in a measure of 160-180F Cerrosafe, letting it harden, then driving out the whole casting and inclusion with a wooden dowel hammered from the muzzle end. In the future, I will keep a chunk of Cerrosafe in my possibles box should such an event happen again.

Last year, I got 3 (!%?!%!$) 45-90 separated cases at the Canadian Black Powder Championships, while it was raining.

I save my competition with this tool: a Trapdoor 45-70 extractor: very easy and very fast... just one minute to get it off, even if the separated part was half way in the riflings...